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02 Nov 2017, 02:04
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
94% (00:46) correct
6%
(00:41)
wrong
based on 189
sessions
History
Date
Time
Result
Not Attempted Yet
Is m between 35 and 75 ?
(1) m is between 40 and 80.
(2) m is between 50 and 90.
(1) m is between 40 and 80.
(2) m is between 50 and 90.
02 Nov 2017, 02:13
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Bunuel
Is m between 35 and 75 ?
(1) m is between 40 and 80.
(2) m is between 50 and 90.
(1) m is between 40 and 80.
(2) m is between 50 and 90.
(1) m is between 40 and 80.
Consider m= 45 this gives us YES
Consider m= 79 this gives us NO
(2) m is between 50 and 90
Consider m= 55 this gives us YES
Consider m= 79 this gives us NO
Combining both gives us YES and NO
So E
19 Jan 2018, 09:09
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Bunuel
Is m between 35 and 75 ?
(1) m is between 40 and 80.
(2) m is between 50 and 90.
(1) m is between 40 and 80.
(2) m is between 50 and 90.
Target question: Is m between 35 and 75 ?
Statement 1: m is between 40 and 80
This statement doesn't FEEL sufficient, so I'm going to TEST some values.
There are several values of m that satisfy statement 1. Here are two:
Case a: m = 55, in which case m IS between 35 and 75
Case b: m = 76, in which case m is NOT between 35 and 75
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT
Aside: For more on this idea of plugging in values when a statement doesn't feel sufficient, you can read my article: https://www.gmatprepnow.com/articles/dat ... lug-values
Statement 2: m is between 50 and 90.
Let's TEST some values.
There are several values of m that satisfy statement 2. Here are two:
Case a: m = 55, in which case m IS between 35 and 75
Case b: m = 76, in which case m is NOT between 35 and 75
Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT
Statements 1 and 2 combined
There are still several values of m that satisfy BOTH statements Here are two:
Case a: m = 55, in which case m IS between 35 and 75
Case b: m = 76, in which case m is NOT between 35 and 75
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT
Answer: E
Cheers,
Brent
